This week’s bitcoin review looks at how Coinbase and Circle are expanding overseas.

Has the domestic bitcoin wallet market busted?

One of the biggest events in cryptocurrency this week Circle, one of the giants in the bitcoin world, emerging from beta and opening up to the public. However, instead of taking the common U.S.-only approach out the gate, the wallet company started with seven languages and a global audience ready to use it.

Also expanding this week was wallet service and payments provider Coinbase, which competes against the likes of Circle and Blockchain. Coinbase had already expanded to 13 European countries, but added another five to its tally yesterday: Ireland, Sweden, Denmark, Switzerland and Poland.

Expanding internationally isn’t unusual for bitcoin companies — companies that embrace bitcoin have been slowly expanding this summer for opening up payments to a global audience. However, it could be positioning…